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Plants 22-23
Plant Systems
| Term | Definition |
|---|---|
| Photosynthesis | Process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organisms' activities. |
| Chemical Energy | Energy stored in the bonds of chemical compounds. |
| Radiant Energy | Energy of electromagnetic waves. |
| Chlorophyll | A green pigment found in plants that they use with light to make food. |
| Glucose | A simple sugar mainly made by plants during photosynthesis from water and carbon dioxide, using energy from sunlight. |
| Geotropism | The turning of all or part of an organism in a particular direction in response to gravity. |
| Phototropism | The turning of all or part of an organism in a particular direction in response to light. |
| Tropism | The turning of all or part of an organism in a particular direction in response to an external stimulus. |
| Negative Tropism | The organism moves away from the stimulus. |
| Positive Tropism | The organism moves toward the stimulus. |
| Stimulus | A detectable change in the internal or external environment of an organism. |
| External Stimulus | Stimulus from outside the organism. |
| Internal Stimulus | Stimulus from within the organism. |
| Response | Any change an organism makes because of a change in the environment. |
| Turgor Pressure | The pressure that water-filled vacuoles exert on the cytoplasm and the elastic cell wall in a plant. |
| Wilting | Water moves out and the plant cells and causes them to become more concave and the plant will loose its rigidity. |
| Osmosis | Water moves in and out of a plant cell through the cell wall. |
| Reactants | Input; the items that go into a chemical reaction. |
| Products | Output; the items that come out of a chemical reaction. |
| Chloroplasts | A structure inside plant cells that absorbs visible light that makes photosynthesis possible. |
| Sun | A form of kinetic energy that travels through space by wave particles, makes life on Earth possible, and can be absorbed, transmitted, or reflected. |
| Carbon Dioxide | A gas that enters the plant and is needed for photosynthesis. |
| Water | A liquid that enters the plant and is needed for photosynthesis. |
| Oxygen | A gas that is release from the plant as a product of photosynthesis. |
| Plant Cell | Eukaryotic cell that has chloroplasts and a cell wall. |
| Stomata | A structure of a plant that is a pore on the under side of the leave that allows the exchange of gases. |
| Xylem | Plant structure in vascular plants that transports water and nutrients from the roots to the leaves of a plant. |
| Phloem | Plant structure in vascular plants that transports food from the leaves to the rest of the plant. |
| Respiration | The chemical process to unlock the energy in the glucose produced by photosynthesis. |
Created by:
LMS 7 Sci
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